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Home -> Community -> Mailing Lists -> Oracle-L -> Re:ORA-12500 TNS:listener failed -- Intermittent
Bob,
We sure have. Your problem comes from end users who do not terminate their database sessions gracefully. This can come from a number of different places, like a program that doesn't log off before closing, or a user who just switches off their PC. Also certain versions of MicroSoft ODBC for Oracle, anything before 2.57, disconnect improperly too. At any rate the dedicated server process has not cleanly terminated leaving a mess behind. Now since MicroSoft never heard of TCPKeepAlive and it's not in their kernel your ONLY option is to reboot, like we do at 00:00:01 Sunday morning.
Well OK, you do have other options, like upgrade to Linux.
Dick Goulet
____________________Reply Separator____________________ Author: Bob Robert <mssql_2002_at_yahoo.com> Date: 8/15/2002 1:58 PM
Gurus,
Oracle Version: 8.0.4 (I know we are way behind)
OS: Windows NT (Service Pack 6)
Physical Memory: 1.5 GB
Virtual Memory: 1.5 GB
Once in every week, we get "TNS-12500 TNS:listener failed to start a dedicated server process". When I check listener process, it was running. When I check number of sessions, it was always below number processes (setup by init.ora file). Whenever we get this error message, one out of fifteen sessions get successful connection. When we check system resources, we had enough free memory in the system.If we try to stop listener process and restart again, it works for a while (may be 30 Min.). We couldn't find any error messages both in alert log file as well as OS event log.
Only solution, we had right now is to reboot the NT server in the middle of production time. Users are getting frustrated whenever we reboot the server.
I think upgrading database to 8i or 9i would help our problem. But, we are not in a position to do so.
I think there might be memory leakage which we could not see from the OS Task Manager.
Did any one come across similar kind of problem. I would appreciate if you could share your experience with me.
Thanks,
Bob
Fat City Network Services -- (858) 538-5051 FAX: (858) 538-5051 San Diego, California -- Public Internet access / Mailing Lists --------------------------------------------------------------------To REMOVE yourself from this mailing list, send an E-Mail message to: ListGuru_at_fatcity.com (note EXACT spelling of 'ListGuru') and in the message BODY, include a line containing: UNSUB ORACLE-L (or the name of mailing list you want to be removed from). You may also send the HELP command for other information (like subscribing).
Fat City Network Services -- (858) 538-5051 FAX: (858) 538-5051 San Diego, California -- Public Internet access / Mailing Lists --------------------------------------------------------------------To REMOVE yourself from this mailing list, send an E-Mail message to: ListGuru_at_fatcity.com (note EXACT spelling of 'ListGuru') and in the message BODY, include a line containing: UNSUB ORACLE-L (or the name of mailing list you want to be removed from). You may also send the HELP command for other information (like subscribing). Received on Thu Aug 15 2002 - 18:35:52 CDT
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